Hello fellow audioholics Any advice regarding purchasing an active cooling 'system' for my recently purchased Rxz9? I have looked around at various vendors and most offer simple 'fan' type solutions to either (1) Drive air up into vents by seating under the receiver (2) Pull room air up from the receiver These range in price from 150-200 dollars. Can anyone let me know what they have done or are doing and how it is working out for you? Any links to vendors? Your help is much appreciated.